title: Accuracy of spectral Doppler flow and tissue velocity measurements in ultrasound systems.
mesh_terms: D001783:Blood Flow Velocity; D002138:Calibration / Q000592:standards; D003951:Diagnostic Errors / Q000517:prevention & control; D004452:Echocardiography / Q000295:instrumentation / Q000592:standards*; D006801:Humans; D019047:Phantoms, Imaging; D011786:Quality Control; D015203:Reproducibility of Results; D018608:Ultrasonography, Doppler / Q000295:instrumentation / Q000592:standards*; D018617:Ultrasonography, Doppler, Pulsed / Q000295:instrumentation / Q000592:standards